1. Key Laboratory of Gas Hydrate; Chinese Academy of Sciences; Guangzhou 510640 Guangdong China
2. Guangzhou Key Laboratory of New and Renewable Energy Research and Development; Guangzhou 510640 Guangdong China
3. Guangzhou Institute of Energy Conversion; Chinese Academy of Sciences; Guangzhou 510301 Guangdong China
4. Guangzhou Marine Geological Survey; Guangzhou 510075 Guangdong China
5. Key Laboratory of Marginal Sea Geology; South China Sea Institute of Oceanology, Chinese Academy of Sciences; Guangzhou 510301 Guangdong China
6. Key Laboratory of Gas Hydrate; Ministry of Land and Resources; Qingdao 266071 Shandong China